Shredding machine



sepfflz, 1939. A,W.-G'ABEL' 2,112,886

SHREDDING MACHINE Filed Jan.. y14, 193s 2 sheets-sheet 2 INVENTOR.

MMM #we ATTORNEY.:

Patented Sept. 12, 1939 l UNITED STATES Application 8 Claims. (Cl. lili-123i 'Ihis invention relates to a. machine for reducing articles, such as fruits, to a finely divided condition and has for its general object to provide a machine of this character which is particularly eilicient for this purpose. Further andl more limited objects of the invention will be set forth in the `detailed description hereof and all oftheobjects of the invention will be realized bythe construction and arrangement of parts shown in the drawings hereof, wherein Fig. 1 represents `a.

central longitudinal sectional view through a machine constructed in accordance with my invention; Fig. 2 a sectionalview corresponding substantially to the line 2-2 of Fig. 1; Fig. 3 a detail l5 in perspective (with parts broken away) showing the knife-#plates and the manner of mountingl and assembling the same; Fig. 4 a detail in section correspondingsubstantially to the line B-t of Fig. 1; Fig. 5 a detail in perspective of one of the blades carried by the cylinder; and Fig. 6 a

fragmentarysectional view corresponding sub" stantially to the'line 6'.6 of Fig. 1, certain parts being omitted for clearness of illustration.

The machine disclosed herein consists generg5 ally of a housing having a hopper through which the Vfruit or other articles to be treated may pass into the housing and between a rotatable bladed cylinder therein and an assembly of knife-plates having their lower toothed ends projected towardA Describing herein the various 'parts by rei- 35 erence characters, I represents the top, 2, 2 the end walls, and 3 the side walls of a housing which is removably mounted upon the base 4. '5 denotes a hopper mounted in the top wall and arranged to discharge into a chute chamber 6, provided be- 40 tween the lower side extensions 5a of the-hopper' and a wall l extending downwardly from the upper portion `oi? the housing in proximity to the cylinder 8 and between the said cylinder and the knife assembly of knife plates (indicated gen- 45 erally at A).

The cylinder 8 is provided with hubs 9 by which l it is supported by and is rotatable with a shaft I0 which is journaled in split bearings II supported by suitable standards or uprights I2 extending 50 from the base 4. The cylinder is provided with inwardly projecting boxes I3, each having a slotl I3 therein for the reception of a blade I4. Each. of the blades is provided withclosely spacedteeth Il# and is-retained in its outward position within f 55 its box l! by means of screws I5 (see Fig. 2) and v by therlngs I6 which are tted'over the endsof f.

the cylinder and in engagement with which the ends of the blades are held by the screwsl, said screws being threaded through the outer end por-v tions of the cylinder.

ll denotes standards oruprights', preferably formed integral'v with the base 4 and the uprights I2, -each having a bracket I8 provided with a pain of longitudinally spaced cylindrical bearings i9, 20,the bearings I9 and 20 on each upright being directly opposite the corresponding bearings in the other upright, thereby to suppo-rt in either of two positions abolt 20 having a sleeve bushing 2l thereon.- Upon this bushing are mounted the hubs 22L carried by the backing plates 22 adjacent to the upper ends thereof. Each backing plate has a knife plate 23 secured to the front face thereof, by means of bolts 2d. Each knife plate is provided with a plurality of closely spaced teeth 23 projecting at nearly right angles therefrom toward the cylinder 8. slightly below a plane exn tending horizontally through the center thereof, and toward the ends of the blades carried thereby.

The knife plates form in effect one of the lower walls of the hopper of which the cylinder forms the opposite wall, the teeth 23n forming 'the bot-4 Adjacent to its lower end, each of the backing plates is provided with a pair of laterally spaced lugs 22b each having ak bore for the reception of a short rod 23, said rod 4being secured to one of the spaced lugs on each backing plate by means of a screw 24.

25 denotes a series of rods one foreach backing plate` and blade, each rod having a sleeve 25a' facing side of the bar 26 and its other end bearing against a nut 29 threaded on its rod, whereby the resistance ei each spring .to` the rearward movement of itscooperating knife and backing plate may be varied. Nuts 30, threaded on the lower ends of the rods 25, limit the movement of. the

.knife plate assembly toward the cylinderV by the springs 28.

The slide 21 islmounted for adjustment along the base t by means of longitudinally extending slots 3| in the base plate which receive the lower ends 21 ofthe sides of the slide, thesaid lower Aendsbeingsecur-edtoshoesl!wyscrewsltthe 'cylinder by means of a screw 3i threaded into -io l said shoes being mounted in upwardly extending guides I4 in the base. The slide, together with the bar 2s, may be moved toward and from the and extending through the upright portion 3i of the bed. the said screw being connected with the slide II.l

Thescrewmaybelockedinposition by means i of a lock nut 31 having an operating handle 31",

`soastobrlngtheendsoftheteeth Ninasclose proximity as desirable to the ends of the teeth on the blades Il, the shaft IQ is rotated, as by means oi' power applied to the pulley II'. In actual operation, the shaft is rotated very rapidly. This causes the blades to partially cut and at the same time to throw the apples or other fruit which may have been introduced into the hopper on top of the teeth n which, vowing to their inclination, constitute in eiIect the bottom of the hopper, while lthe knife plates and the opposite portion of the cylinder constitute opposed walls of the lower portion of the hopper. Practically all of the fruit is passed in a very iinely reduced condition through the narrow space between the teeth 'ile on the blades I l and the teeth 23e. Whatever portions of the fruit may pass between the teeth on the blades and those on the knife plates will also be in an extremely finely reduced condition. Should any hard object, such as a stone, be admitted to the space between the blades and knives. the appropriate knife or knives and their backing plate or plates will be forced backwardly against the resistance of the spring orsprings 2l, thereby enabling the said objecty to pass through the machine without injuring the parts thereof.

,By means of the slide and the screw 2l. the space between the blades and knives may be adjusted as desired to compensate for wear or to adapt the same for operating upon different objects..

clent in operation, enabling me to sub-divide thel fruit or other materials subjected thereto to so ilne a condition as to enable a maximum extraction of juice therefrom. Furthermore, by virtue of the construction -and arrangement'of the parts shown and described herein, I have produced a machine which will permit objects such as stones to pass therethrough without injury to the working parts. and which will permit the parts to be 1. In amachine of the character described, the

combination, with a rotatable cylindrical body provided with slotted boxes, of bladesy mounted in the slots of the said boxes and provided with teeth at the outer ends thereof, an assembly comprising a plurality of knife plates each having teeth at its lower end projecting toward the said cylinder, a backing plate to which each of` said knife plates is secured, means common to the upper portions of all of said backing plates for pivotally supporting the same, rods each pivotally connected at one end to the lower portion of one of said backing plates, a slide, a bar having its ends pivotally supported by said slide and through which the vopposite ends of said rods extend, a spring surrounding each oi'said rods and interposed between the said bar and the saidplates, means for limiting the movement of the rods throughV the bar due to the action of said springs, and means flor-moving the slide toward and from the said cylindrical 2. In a machine of the character described, the

combination, with a rotatable cylindrical body' provided with slotted boxes, of blades mounted in' the slots of the said boxes and provided with teeth at the outer ends thereof, an assembly comprising a plurality of knife plates each having teeth at its lower end projecting toward the said cylinder,a backing plate to which each of said knife plates is secured, means common to the upper portions of all of said backing plates for` pivotally supporting the same, rods each pivotally connected at one end to the lower portion of one of said backing plates, a bar through which the opposite ends of'said rods extend, a spring surrounding eachof said rods and interposed between the said bar'and the lsaicl blades, means for limiting the movement of the rods through the bar due to the actlrm of said springs, and means forpivotally supporting the ends of said 3. In a machine of the character described, the combination of a rotatable cylindrical body, blades carried by said body and projecting beyond the outer surface thereof, a knife plate pivotally supported adjacent to its upper end for movement about a horizontal axis and having its lower end in proximity to the said body. a rod connected at one end to the lower portion of said knife plate, a slide, a member supported by said slide and through which the other end of the said `roti extends. a spring surrounding the said rod and bearing at one end against said member and yieldingly, pressing the same and the lower portion of the knife plate toward the said body, and means for adjusting the slide toward and from the saidl body.

4.111 the combination recited in claim 3, the member through which the rod extends being supported by the said slide for rotation about a hori- Ina machine of the character described. the combination, with a rotatable cylindrical body and a plurality of'blades carried thereby, of a knife assembly comprising la pluralityl of backing plates, a knife plate carried by each of said backing plates and having teeth at its lower end .denected toward the said cylindrical body, each 1| envases of said backing plates havingva hub adjacent to e its upper end, a bushing extending through all of said hubs, a rod extending through said bushing, and means for removably supporting the ends of said rod, a slide having side members, a bar having trunnions journaled in said side members to rotate about an azjs substantially parallelwith the axis of the said body, rods extending through lthe said bar and each pivotally connected to the lower portion of a backing plate, a spring sur rounding each rod and yieldngly pressing the lower portion of each backing plate toward the said body, means for limiting the movement of the said rods and of the lower portions of saldi backing plates toward the said body, and means vfor adjusting the said slide toward and from the seid body.

. o. In a machine of the character described, the combination, with a rotatable cylindrical body' and a plurality of blades carried thereby, of o. irnife assembly comprising a plurality of bashing plates, a knife plate carried by each of said backing plates, each. of said backing plates having a i hub adjacent to its upper end, a rod extending through said hubs and means' for removably supporting the ends of said rod, a bar having tronnions mounted to rotate about an axis substantially parallel with the axis of the said body, rods extending through said bar ,and each pivotally connected to the lower portion of the hacking plate, a spring surrounding each rod and yieldingly pressingl the lower portion-of each backing plate toward the said body,rand means for limitving the movement of the said rods and of the lower portions of said backing plates toward the Acylindrical body. -A

- 7; In a machine of the character described, the

combination, with a rotatable cylindrical body and a plurality ofblades carriedthereby, of a backing plate, removable means pivotally supporting the upper portion of the backing plate for movement about an axis substantially par-l allel with that of the said cylindrical body, a knife plate carried by said backing plate and having its lower end in proximity to the said body, a bar having trunnions mounted to rotate about an axis substantially parallel to the axis of said body, a rod extending through said bar and pivotally connected to the lower portion of said backing plat'e,

a spring surrounding said rod and yieldingly pressing the lower portion of said backing plate toward the said body, and means for limiting the movement of the said rod and of the lower por tion of said backing plate toward the said body.

8. In a machine of the character described, the combination, with a vmtata'tlle cylindrical body provided withl blades extending substantially the full length .thereof and' projecting beyond the cylinder surface therecn,V each blade having a plurality of closely spaced teeth thereon, of a hopper having its upper portion erred above the said body, an assembly comprising a plurality of downwardly extending knife plates emhpht- Iotally supported adjacent to its upper end. and each having teeth at its lower end projecting at nearly right angles therefrom toward the said body@4 theteeth on the knife plates being also closely spaced and having their ends in close .proximity to the ends of the teeth of the blades instable toward and from the cylinder for maintaining the lower ends of the teeth of vsmid knife plates in a predetermined relation to the teeth of said blades, the' last mentioned means being yieldable to permit a movement of the lower portion of each of said knife plates away from the cylin anni may.

1 l Lamm w. esem.. 

